Convertible Top: Description and Operation

CIRCUIT OPERATION

Soft Top Open and Close Relay Power
Battery voltage is applied at all times from MAXI Fuse 3 through CKT 660 to terminal 4 of the Soft Top Open and Close Relays.

Soft Top Motor Switch Power
Battery voltage is applied at all times from Fuse C7 through CKT 974 to terminal 3 of the Soft Top Motor Switch.

Soft Top Open (Unlatch) Operation
When the Soft Top Motor Switch is pressed to OPEN, battery voltage is applied through CKT 914 to the coil of the Soft Top Open Relay. The normally grounded relay coil is energized, applying the battery voltage at terminal 4 of the Soft Top Open Relay through CKT 163 to terminal 4 of the LH and RH Header Motors.

The ground path for the header motors was also established when the Soft Top Motor Switch was pressed to OPEN. Battery voltage is then applied from CKT 914 through Soft Top Switch Diode 2 and CKT 916 to terminals 3 and 5 of the LH and RH Header Motor Timer Relays and the coils of the LH and RH Header Motor Power Relays. The Timer Circuit, in the Header Motor Timer Relays, senses voltage at terminal 5 and closes the relay ground switch for one-tenth of a second energizing the relay (the Timer Circuit will not repeat this action until power is removed from CKT 916). The relay contact, within the Header Motor Timer Relays, closes, grounding terminal 2 of the Header Motor Power Relays, causing the relays to energize.

The Header Motors ground path is now complete from terminal 1 of the Header Motors through CKT 162, the Header Motor Power Relay contacts, CKT 918, the Soft Top Close Relay, and CKT 1504 to G309. The Header Motors begin to run. After one-tenth of a second the Timer Circuit opens the relay ground switch, de-energizing the relay, opening the ground path of the Header Motor Power Relay coils provided by the Header Motor Timer Relays. However, when Header Motors begin to run, the extreme switches (internal to the Header Motors) close and keep the Header Motor Power Relay coils grounded at G309. The Header Motors now run until the motors have reached the fully open (unlatched) position, causing the extreme switches to open, opening the ground path of the Header Motor Power Relay coils. The Header Motor Power Relays de-energize opening the ground path of the Header Motors. The Header Motors stop.

Soft Top Close (Latch) Operation
When the Soft Top Motor Switch is pressed to CLOSE, battery voltage is applied through CKT 915 to the coil of the Soft Top Close Relay. The normally grounded relay coil is energized, applying the battery voltage at terminal 4 of the Soft Top Close Relay through CKT 918 to terminal 4 of the Header Motor Power Relays. The Header Motor Power Relays are energized and kept energized by the Header Motor Timer Relays and Header Motor extreme switches the same way as in the Open (Unlatch) Operation except that power to CKT 916 is supplied from CKT 915 through Soft Top Switch Diode 1. When the Header Motor Power Relays energize, the power on CKT 918 is applied across the relay contacts through CKT 162 to terminal 1 of the Header Motors.

The ground path for the Header Motors to G309 is through CKT 163, the Soft Top Open Relay and CKT 1504. The motors run until the fully closed (latched) position is reached, causing the extreme switches to open, opening the ground path of the Header Motor Power Relay coils. The Header Motor Power Relays de-energize disconnecting power to the Header Motors. The motors stop.

Header Motor Disable
If the Ignition Switch is not in the RUN position the Header Motors can be operated at any time. If the Ignition Switch is in the RUN position the gear shift must be in PARK or the Body Computer Module (BCM) will disable Header Motor operation. The BCM disables the motors by applying voltage from terminal 3D16 through CKT 926 to the coil of the Header Motor Disable Relay. The relay coil is always grounded through CKT 1504 to G309. The Header Motor Disable Relay energizes disconnecting CKT 917 and the Soft Top Open and Close Relays from ground. The Soft Top Open and Close Relays can no longer be energized.

Hard Top/Soft Top Pull-Down Motor Power
Battery voltage is applied at all times from MAXI Fuse 3 through CKT 660 to terminal A of the Hard Topi Soft Top Pull-Down Motor.

Soft Top Pull-Down Operation
When the Pull-Down Latch is fully extended, the Pull-Down Switches (see schematic) will be in position 2 and voltage will be applied through the motor and CKT 739 to the Pull-Down Latch. When the Soft Top Hook is engaged with the Pull-Down Latch, the motor is grounded through the Soft Top Hook. The motor runs and pulls the Soft Top Hook down until the Pull-Down Latch reaches the fully down position. The Top Hook Position Switch opens and the Pull-Down Switches move to position 1. Voltage is now applied to the motor in the opposite direction but with the Pull-Down Switches in position 1 and the Top Hook Position Switch open, there is no path to ground for the motor.

When the Soft Top/Hard Top Release Lever is pulled to release the Soft Top, the Soft Top Hook is released and the Top Hook Position Switch closes connecting the motor through CKT 128 and the Soft Top Position Switch to ground. The motor runs and drives the Pull-Down Latch up. When the fully up position is reached the Pull-Down Switches move to position 2, applying voltage to the motor in the opposite direction. The motor does not run until the Soft Top Hook is again engaged with the Pull-Down Latch.

Hard Top Pull-Down Operation
The Hard Top Hook is isolated from ground. Therefore, the Hard Top/Soft Top Pull-Down Switch must be used to pull down the Hard Top. When the Pull-Down Latch is fully extended, the Pull-Down Switches (see schematic) will be in position 2 and voltage is applied through the motor and CKT 739 to terminal 1 of the Hard Top/Soft Top Pull-Down Switch. When the Hard Top/Soft Top Pull-Down Switch is pressed to DOWN position, the ground path for the motor is completed through CKT 1504 to (3309. The motor runs and pulls the Hard Top Hook down until the Pull-Down Latch reaches the fully down position. The Pull-Down Switches move to position 1 applying voltage to the motor in the opposite direction, and the Top Hook Position Switch opens disconnecting the motor from ground.

When the Soft Top/Hard Top Release Lever is pulled to release the Hard Top, the Hard Top Hook is released and the Top Hook Position Switch closes applying voltage through CKT 128 to terminal 5 of the Hard Top/Soft Top Pull-Down Switch. When the Hard Top/Soft Top Pull-Down Switch is pressed to the UP position, the ground path for the motor is completed through CKT 1504 to (3309. The motor runs and drives the Pull-Down Latch up. When the fully up position is reached the Pull-Down Switches move to position 2, applying voltage to the motor in the opposite direction. The motor does not run until the Hard Top/Soft Top Switch is pressed to DOWN or Soft Top Hook is engaged with the Pull-Down Latch.